Projecting machine



May 3,1927. 27,396

O. P. R. LEHMANN PROJEC'I'ING MACHINE Filed Sept. 1, 1923 4 Sheets-Sheet l INVENTOR 6w 6 MM M A TTORNE Y5 May 3, 192 7.

b. P. R. LEHMANN PROJECTING MACHINE Filed Sept. 1. 1925 "'IHIHI" "IHHHHHI S 4 Sheets-Sheet 2 11v VENTOR A TTORNE Y5 May 3,1927. 1,62 7.396

O. P. R. LEHMANN PROJECTING MACHINE Filed Sept.1, 1923 4 Sheets-She et INVENTOR- ATTORNEYS Patented May 3, 1927.

UNlTlill) STATES OTTO I. R. LEHMANN, OF NEWARK. NEW JERSEY, ASSIGNOR TO VICTOR C. THORNE, OF NEW YORK, N. Y.

PROJECTING MACHINE.

Application filed September My invention relates to projecting machines of the type in which images are projected upon a screen by means of slides and has for its object to provide a novel and efficient. mechanism whereby individual slides are automatically brought to and removed from an operative projecting position. Other more specific objects will appear from the description hereinafter.

In the accompanying drawings which illustrate an example of the invention without defining its limits, Fig. 1 is a side elevation of the projecting machine with parts in section, Fig. 2 is a similar view looking in the opposite direction; Fig. 3is a sectional elevation on the line 3-3 of 1.; Fig. 1 is a fragmentary sectional elevation on the line 44 of Fig. 3; Figs. 5 and 6 are views similar to Fig. 1 but showing the parts in different positions; 7 is a fragn'ientary sectional view on an enlarged scale taken on the line 7-7 of Fig. 1; Fig. 8 is a detail sectional view on the line 8-8 of Fig. 1; Fig. 9 is a detail sectional view on the line 99 of Fig. 8 and Fig. 10 is a detail vie similar to Fig. 9 but showing the parts in a different position.

As shown in the drawings the projecting machine which is in the nature of a stereopticon, comprises a casing and tube 16 containing the objective in the well known way, which tube may be telescopically constructed for the purpose of adjusting the focus of the machine. The latter further includes condensers 17 arranged in registry with a slide-opening 18 on the one side and with an illuminating means comprising, for instance, an incandescent bulb 19 on the other side. The electric bulb 19 may be located in front of a reflector 26 and receives its current by means of wires 21 connected with a suitable source of electricity. The condenser 17, lighting means 19, and reflector 20, are carried upon a suitable support 22 located behind the casing 15 and preferably enclosed by means of a cover 23 which, as shown, may be hinged at 24 upon the casing 15; the cover 23 as shown in F 1 may be provided with ventilators 25 and with air outlets 26 as illustrated in Fig. 2. As so far described the projecting machine may be of any well known construction and arrangement and may include any features commonly found in stereopticons for pr0- jecting slides upon a screen.

In the present instance the. slides 26 comprise plates containing the pictures or other images to be projected, which plates themselves may be of any approved or conven tional construction and in the present case are fixed in frames 27; the upper edges of the latter are preferably recessed as indi cated at 28, said frames being further provided, upon opposite vertical edges, with socket members 29 arranged in registry with each other and having, for instance, an inverted U-shape as shown in Figs. 1 and 6. A plurality of slides 26 are contained in the casing 15 and are arranged in upright contiguous relation to each other at the lower portion thereof as shown in Figs. l, 5 and 6. If desired, and in order to facilitate advancing of the slides 26 in the manner to be more fully described hereinafter, said frames may be set upon an inclined platform 30 within the casing 15. A plate 31 extends transversely acnoss the casing 15 at a point above the plurality of slides 26 and in parallel relation to the bottom of the casing or to the inclined platform 30 if the latter forms a part of the machine. The p ate 31 in co-opcration with the bottom of the casing 15 or with the inclined platform 30 the case may be, constitutes a magazine in which the supply of slides is contained, said plate 31 terminating at a point in registry with the second slide in the magazine so as to leave a free above the terminal slide a in Fig. 4; this terminal slide a rests againstflanges 32 which project from the rear wall of the casing 15 below and in registry with the slide opening 18; the latter as shown in Figs, 5 and 6 in the form of a flanged rectangle the forward edge of which coincides with the forward edges of the flanges 32. The plate 31 is fixed in position within the casing 15 by means of flanges 33 attached to the casing 15 in any convenient manner. The socket members 29, as shown in F 3, are arranged to travel 1n guides 3 1 formed in the casing 15 at appropriate points and arranged in parallel relation to either the bottom of the casing or the inclined platform 30 as the case may be, said guides at their opposite end portions being transversely open as illustrated in Fig. 1 and being continued upwardly to form vertical guides 34 and 34:" by means of flanges 35 comprising part of the casin 15. The casing 15 is shaped at predetermined points to term guides 36 as shown in Figs. '1 and the purpose of which will appear more fully hereinafter. Go-ope 'ating; tracks 37 are 10- 'ated at diametrically opposite points vithin the upper portion of the casing at a distance above the guides 3b as shown in li ies. l. l 5 and 6: similar tracks 38 are located at dia1netrically opposite points within the lower part of the casing as shown in Figs. 1 and 2, the purpose of which will also appear more fully hereinafter.

The slide manipulating mechanism comnxiscs levers carried by a slu 'l't it) rotatahl v mounted in a bearing 4-1 extending upwardly from the plate 31, said levers heine; upon opposite sides of the tlSillg 5 in registry with each otho' and at: their opposite ends a e provitled with arms 4-2 pivoted at t l upon the levers 9 as shown in Fig. l: coil sprii are connected at one end upon the levers 3t and at their other ends with pins 416 located at one end oi" each arm At the opposite end each arm is provided with a roller 4-? and with a. p l u 'ct'erred construction a shield extends 't'rom the free end of each arm 9 in parallel relation to and at a distance t eat the pin l-S thereof as shown in Figs. l. fl and it). The shat't t-t) turthe' carries a A lll itiilated gear 5t) adapted to mesh with a mutilated 1'eut 51. mounted upon a stuhshalt 59 journalled in a hearing: 53 forming; p: 't id or secured to a cover 5 1 the la. "lttftilttl upon the using 15. to instan means ot StliWS 55 as shown in llig'. L. the stub-shalt t car ies also a worn1--;n ar it which meshes wi h a worm mounted upon or tormina' part of the driving shaft 4 The latte is mounted in suitalile heari' 5:?) and carries a worut-gg ear (it) whic mesh with a worm til. located upon the 2 ol an elect ic motor tSEl. wherehi' motive 1r supplied to the. apnarati i as will c fully hereinafter. "ill a muti :31 's arrair'i'ed to mesh 1 l i -l n near r:

it. .lso with mounted upon a stain hlll'iitlll'ftl in. the cover S t and cat r; a near (it; in mesh with a gear (51': the utter is carried hv a stuh-shai t (58 also d upon the cover 54- and meshingpinion (55) R34. hown in Fin: ii: ion 1) is carried hr a shaft 'i't) which ext :e casing 15 and it located respectively at one side of the casino; a second cover 54: de'tachahly sefo instance. by means of screws 5353" upon the opposite f e oi the 'asing'. illhe shatt it) is Further provided with hovel pirious it): which me h with hevellcd ;ear,-i Til secured u; on upright shutter 74: journalieil in hearings 75: within the casino; The upriizht shafts T4: carry devices wherelrv the plates :26 in the magazine ea c propelled "lorwardlv in steps, said devices each compris- The in hearings ing: a plurality of memhers it) each ot which includes a projection 7th the purposes of which will appear more tally lureinz rliter.

in addition to the parts so far dcscrihcd the machine may include a shutter ii" pivot ed at "T8 in the casing 15 and in its normal position rest ng); upon a cushion it located upon the plate 3t as shown in l igg l; the shutter may he prin 1r-controlled and i o located and arranged as to he rapahlc ot heing' adjusted into rcpgi'str with the tithes lii during the operation of the machine.

In practice a pin 'alitiy of slides :25) are o 'ated with n the magazine oi the casino ii in the upright manner indicated in Fig. it heing understood that at the lit-ginning of the operation all ot' the slides constituting; the supply are locz ted in the 1ra=ga aine the motor (33 is now started the shaft will be rotated therelrv and through the medium of the worm and wornr-gear at) will rotate the stub-shaft 52 and correspondingly actuate the mutilated near it in the direction (it the arrow in E ie. 52: it" will he understood that the position of the parts is such at this stage that the mutilated gear 51 will first engage the mutilated aca. it and thus hring ahou a rotation ot the slitatt 1 0. .lllhe levers 3: will accordin z'l he moved in a circular path and will tarry along)? the arn'is $2 in such a way as to cause the one set of rollers t? to travel atom: the tracks 1-18 and to finally bring the pins thereof into engagement with the so lcet members 29 of the terminal. slide a. A, the actuation oi the mechanism continues the arms 39 will he further actuated to exert a lifting; action upon the said arms 412 wherehy the terminal slide (6 will he li'ltcd into 'stry with the slide opening 1.8 as shown in l ipgi t-.1 t upward movement oi the terminal slide (4 is arrested when the recessed edge 28 of the trame i2? con'ies into contact with pins 7) located at proper poin s. in the casing; with respect to the slide oped int: 18 to position successive in exact registry therewith. The position oi the parts at this stage ciearlv indicated in Fin. 4t in which the slide 256 which has hcen raised the m a described is in registry with the project-int? device and in position to have its image projected upon the eel-e n in the customary nier, the shutter liieinp' in it:-: inope'ative position as i. t trated. At the proper ti 1e during the described operations "the undiluted "t-t til engages and operates the mutilated g r (1i which, in turm ln'ingi s ahout a rota 'ni oi lit) ltlS

lli?

device to exert a? push upoir the terminal plate at the other end oi? the supplyin the magazine whereby i the entire [supply of slides ispushed 't'orwardly to an extent sufzficient to replace the alatctz which has been raised with a new plate (I, as shown in Fig. l. At the tern'nnation of this operation propelling the supply of slides forwardly in. the magazine. a projection 76 or each of the members is located behind the last slidein the magazine in such an-ianner as shown '111 Fig. 7 as to prevent the supply of slides from tilting "backward. As the operation of the n'iechanism contil'l ues the slide 26 with its'frame 27 which occupies the raised position and whichhas been projected, is tilted to the position shown in Fig. 5; this result issecured' by reason of the engagement of the recessed-edge 28 0f V inssb-and {because theparticular arn'is 42 at the up )er;end of the the slide with the levers 39exert a pull upon the socket members 29 of the trainee-t saidslide.- 'By'this operation of the mechanism will cause 'the, rollers 47' to-travel along the tracks 37 and i will carry theslide to tl1e posi'tion shown in Fig. 6 in which the'shutteifl'by-the action of said slide, has been brought to a position in front of thetube lti so as to cut ofl? the same from thesource of lightf19. 'Afin ther ope ation of the mechanism causes the slide to be lowered from the position shown in Fig. 6 downwardly 1n the" guide 34 and back into theln'iagazine into regist y with the supply of slides therein. The pre sure of the shutter 77, by the action of itss'pring' or springs upon the slidepositively insures the return thereof to the magazine without interference. During the operation of "returning the slide which has been projected; to the magazine the other-arms 1 been operated in the manner first described to raise a new slideinto registry with'the slide opening 18 and into position for projection upon. the screen; it will be'understood that as the slide which hasbe'en pro jected is passed backinto the magazil'ie'the shutter 77 wilbreturn to 1tsinope'rajt ve' position shown 111 Fig. {t by gravity, the.

cushion 79 servingftoprevent noise and to absorb any shocks incident to such return and to'thereby preventinjury to the shutter and to the adjacent parts of the machine.

As soon as the slide which has been ro; jectod is fully returned tolthe magazine in line with the slides therein, 't'heslidefirdvancing device's willjbe actuated inthmhn ner previously described to cause. tliefne successlve numbers 7 5 to again advance the supply of slides in said magazine in. order to-again placea. terminal slidein position ready to be raised-for n'ojection. In this way successive slides are automatically raised into position for projection and returned to the magazine, the operation being such that while one slide is being returned to the magazine another slide is into operative position.

During" the manipulation oi. the slides being raised from and back to themagazine, the shields disengagement of the socket members 29 from the pins 48 as indicated in Figs. 8, 9 and 10;

In order to steady the parts in their movespectively raised into operative position and returned to inoperative position back into the magazine; for the same purpose said rollers may be grooved as indicated in Fig. 8 and fitted uponthe tracks 37 and 38 res-pee 49 on the-arms 42 prevent unintentional ments the rollers 47 may be caused to travel 1n grooves c and d as the slides are being r'etively said tracks in such case being bevelled as. shown in Fig. 0. During the transfer from the position shown in Fig l of the drawings tot'he' positions shownsuccessivcly in Figs. 5 and 6, theparticular slide and frame 27 are guided between the guides 36 asindicated in Fig.

If desired, a fan may be located upon the'shaft 61 of the electric motor "for main taining the condensers 17 and elements a'l acent to t e lighting means 19 in a cool con- :dition.

The mechanism whereby the slides are al ternatelyraised into inoperative position in themagazme is simple and eflicient in operation and automatically exposes the slides forprojection in successiveand continuous stepsrequiring no attention on the part of the operator. 5

While the invention has been. illustrated I andis primarily intended for use in cornice tion with projecting machines, it will be un- '-derstood that the mechanism may be adapted for purposes other than those set forth in "thedescription and that the slidesi lti and fran'iesf27 are to be construed as lQPIGSQDti-l- 'tive of other ,units which may be Shifted from a magazine by said mechanism or its equivalent. v

Themachinemay be operated in the ordinary way without slides in the magazine, in which case individual slides would be successively introduced into operative position in the machine through. an opening in the "top thereof. v 1 Various changes in the specific lor n shown and described may be made within the .scopeof tl I the spirit of my invention.

I claim:

tion of projecting means, a magazine, a plu- 1. In a projecting machine, ihecombinm Lil) rality of framed slides standing on edge in said magazine in upright surface engagement with each other, socket members on the frames of said slides, a pair of rotatable levers, actuating means for rotating said levers, arms at the opposite ends of said lovers adapted to engage the sockets of said slides and to raise a slide from said magazine into registry with said projecting means and to coincident-ally return a previously raised slide to the magazine, and means operated by said actuating means for advancing said plurality of slides in said magazine in predetermined steps to place successive slides in position to be lifted from said magazine.

2. In a projecting machine, the combination of projecting means, a magazine, a plurality of slides to be projected, frames enclosing said slides and having their upper edges recessed, socket members on opposite edges of said frames, rotatable levers, actuating means for intermittently operating said levers, arms pivotally carried by said levers and arranged to engage said sockets to lift a. slide from said magazine into registry with said projecting means and to coincidentally restore a previously raised slide to said magazine, stationary pins co-operating with the recessed edges of said frames to position the slides in registry with the projecting means and to start a slide upon its return to the magazine, rollers on said arms, guiding means co-operating with said rollcrs to guide said arms in their intended paths during manipulation of said slides, rotatable devices for advancing the plurality of slides and frames in predetermined steps, means combined with said devices for preventing backward tilting of said slides and frames and mechanism connected with said actuating means and intermittently operated thereby to actuate said rotatable devices.

3. The combination of a magazine, a plurality of units therein, socket members on opposite edges of said units, rotatable levers, actuating means for intermittently op erating said levers, arms pivotally carried by said levers and arranged to engage said sockets and automatically lift a unit from said magazine, rollers on said arms, guiding means co-operating with said rollers to guide said arms, rotatable devices for advancing said plurality of units in predetermined steps and mechanism connected with said actuating means for intermittently operating said rotatable devices.

4. The combination of a magazine. a plurality of units therein, socket members on opposite edges of said units, rotatable levers, actuating means for intermittently operating said levers, arms pivotally carried by said levers, pins on said arms adapted to engage said sockets and automatically lift a unit from said magazine, shields on Said arms for preventing unintentional disengagement of said pins and socket members, rotatable devices for advancing said plurality of units in predetermined steps and mechanism connected with said actuating means for intermittently operating said rotatable devices.

5. In a projecting machine, in combination, a magazine adapted to hold a multiplicity of slides, a slide opening to which said slides are successively carried for display, rotating means engaging the terminal slide and carrying the same to the slide opening, said rotating means during the continuous movement thereof carrying the slide last displayed toward the rear of said magazine, means to tilt the slide during its movement toward the rear of the magazine, said rotating means carrying said slide into the magazine and depositing it after the rearmost slide contained therein, said rotating means during the continued travel thereof engaging the foremost slide and carrying it to the display opening.

6. In a projecting machine, in combination, a magazine adapted to hold a multiplicity of slides, a slide opening to which said slides are successively carried for display, rotating means engaging the terminal slide and carrying the same to the slide opening, said rotating means during the continuous movement thereof carrying the slide last displayed toward the rear of said magazine, means to tilt the slide during its movement toward the rear of the magazine, a shutter in the path of the slide adapted to be operated during the movement of the slide away from the display opening.

7. In a projecting machine, in combination, a magazine, a slide opening arranged above the magazine, rotating means adapted to raise the terminal slide in a plane substantially parallel to the plane of the slide opening and to exposure position in line with said slide opening,'said rotating means during the continued movement thereof carrying the slide over the magazine, means to tilt the slide with its lowermost edge directed toward the rear end of the magazine whereby the slide may be moved angularly into the magazine and behind the rearmost slide.

8. In a projecting machine, in combination, a magazine, a plurality of slides standing on end in said magazine, each slide being in surface contact with the slide immediately preceding it, an open ended member at each side of said slides, a slide opening above said magazine, a pair of rotating levers, an arm on each lever, a pin on each arm, said pins during the rotation of the levers moving upwardly and engaging with the members on the terminal slide in the magazine and raising said slide to the slide opening, said arms during their continued movement depositing a slide in the magazine in back of the rearmost magazine, said pins upon the deposit of said slide at the rear of the magazine passing out of engagement with said members and moving into engage ment with the members on the terminal slide of the magazine.

9. In a projecting machine, in combina tion, a magazine, a plurality of slides standing on end in said magazine, an open ended member at each side of said slides, a slide opening, a pair of rotating levers, an arm pivoted on each lever, pins at the forward ends of said levers and springs at the rear ends thereof, said pins during the rotation of the levers moving upwardly and ing With the members on the terminal slide in the magazine and raising said slide to the slide opening, said arms during their continued movement depositing a slide in 30 face contact in the magazine and having ends thereof resting upon a stationary platform, a pair of oppositely spaced levers ro-- tat-ing in unison, each lever carrying at an end thereof a pivoted arm, a socket nieni her on each side of each article to he dies played, the said arms during their movement with the rotating lever engaging the terminal article and raising it to the display po sition and during the continued rotation thereof carrying the said article to the rear of the magazine and depositing it next to the last most article in said magazine, and means to rotate said levers.

11. In a display machine, in con'ibinaiiion, a display position, a magazine adapted to hold a multiplicity of articles to be displayed, a pair of spaced levers pivoted above the upper most edge surface of said articles and adapted to be rotated, arms at both ends of said levers, said arms coacting in pairs, socket members on the articles, said arms during rotation carrying the terminal article from the magazine to the display position and after display depositing said article next to the rearmost article in said magazine and means to rotate said levers.

In testimony whereof I have hereunto set my hand.

OTTO P. R. LEHMANN. 

